Improvement in pulverizing subsoil-plows



UNITED STATES PATENT QFFICE.

JOSIAH T. MANGHAM, OF RAINEYS CREEK, TEXAS.

IMPROVEMENT IN PULVERIZING SUBSOlL-PLOWS.

' Specification forming part of Letters Patent No. 155,249, dated September 22, 1874; application filed June 20, 1874.

To all whom it may concern:

Be it known that I, JOSIAH T. IVIANGHAM,

- of Raineys Creek, in the county of Coryell and State of Texas, have invented a new and valuable Improvement in Pulverizing Subsoil- Plow; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the annexed drawing making a part of this specification, and to the letters and figures of reference marked thereon.

Figure l of the drawing is a representation of side view of my plow. Fig. 2 is a plan view of the same. Fig. 3 is a detail view of the same.

This invention has relation to subsoil-plows, which are also designed for pulverizing the soil; and it consists in a novel manner of applying the upper end of the plow-standard to the beam, whereby the standard can be adjusted both laterally and vertically in the arc of a circle, and any desired degree of inclina tion. given to it, as will be hereinafter explained.

In the annexed drawings, A designates the beam of the plow, and B B the handles thereof. O designates a metal standard, which has secured to it the mold-board D and landside bar I). The front edge of the standard U and the front surface of the mold-board present a gradual curve from the plow-point to the plow-beam. The upper end of the standard has constructed on it a broad head, 0, the rear end of which has a curved slot, h, through it, for receiving a bolt, F, which passes up through a slot, 9, in the beam A,

and receives on its upper end awasher, f, and a nut, f. The front end of the head is constructed with a notch, i, which receives a loop, E, that embraces the beam A, and is confined in place by means of a tie-plate, e, and nuts e. The standard is by these means rigidly secured to the beam A, and by loosenin g the nut f the point of the mold-board can be adjusted laterally for taking more or less land.

By reference to Fig. 1 it will be seen that the upper end of the head 0 is convex-that is to say, it presents a segment of a circle; also, that the surface of the beam A, against which the head 0 is confined, is concave, the are being much longer than that of the head 0. The object of this construction is to allow the plow-point to be inclined more or less according to the depth it is desired to run in the ground. This adjustment is efi'ected by- 

